“Scholars are still striving to uncover clues to the mysteries hidden here high in the eastern slopes of the Andes, covered with tropical forests of the upper Amazon Basin. Machu Picchu appears to lie at the center of a network of related sites and trails —and many landmarks both man-made and mountainous appear to align with astronomical events like the solstice sunset. The Inca had no written language, so they left no record of why they built the site or how they used it before it was abandoned in the early 16th century,” the renowned magazine remarked.
Landscape engineering
National Geographic Traveler affirmed that landscape-engineering skills are in strong evidence at Machu Picchu. The site’s buildings, walls, terraces, and ramps reclaim the steep mountainous terrain and make the city blend naturally into the rock escarpments on which it is situated.
“The 700-plus terraces preserved soil, promoted agriculture, and served as part of an extensive water-distribution system that conserved water and limited erosion on the steep slopes,” the publication explained.